Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss), Net of Tax [Member]	Total
Balance at Dec. 31, 2020	$ 89,052	$ 225,507	$ 326,738	$ 13,568	$ 654,865
Balance (in shares) at Dec. 31, 2020	17,810,401
Increase (Decrease) in Stockholders' Equity [Roll forward]
Net income			87,939		87,939
Other comprehensive income (loss)				(18,416)	(18,416)
Cash dividends declared			(27,927)		(27,927)
Issuance of common stock	$ 205	760			965
Issuance of common stock (in shares)	41,168
Issuance of restricted stock	$ 46	(46)			0
Issuance of restricted stock (in shares)	9,193
Vesting of restricted stock	$ (88)	88			0
Vesting of restricted stock (in shares)	(17,681)
Stock-based compensation		776			776
Balance at Dec. 31, 2021	$ 89,215	227,085	386,750	(4,848)	698,202
Balance (in shares) at Dec. 31, 2021	17,843,081
Increase (Decrease) in Stockholders' Equity [Roll forward]
Net income			81,814		81,814
Other comprehensive income (loss)				(124,304)	(124,304)
Cash dividends declared			(29,968)		(29,968)
Issuance of common stock	$ 271	770			1,041
Issuance of common stock (in shares)	54,125
Issuance of restricted stock	$ 252	(252)			0
Issuance of restricted stock (in shares)	50,438
Vesting of restricted stock	$ (147)	147			0
Vesting of restricted stock (in shares)	(29,364)
Stock-based compensation		1,262			1,262
Balance at Dec. 31, 2022	$ 89,591	229,012	438,596	(129,152)	$ 628,047
Balance (in shares) at Dec. 31, 2022	17,918,280				17,918,280
Increase (Decrease) in Stockholders' Equity [Roll forward]
Net income			78,004		$ 78,004
Other comprehensive income (loss)				25,831	25,831
Cash dividends declared			(32,200)		(32,200)
Issuance of common stock	$ 265	864			1,129
Issuance of common stock (in shares)	52,857
Issuance of restricted stock	$ 264	(264)			0
Issuance of restricted stock (in shares)	52,865
Vesting of restricted stock	$ (117)	117			0
Vesting of restricted stock (in shares)	(23,372)
Forfeiture of restricted stock	$ (4)	4
Forfeiture of restricted stock (in shares)	(790)
Stock-based compensation		1,397			1,397
Balance at Dec. 31, 2023	$ 89,999	$ 231,130	$ 484,400	$ (103,321)	$ 702,208
Balance (in shares) at Dec. 31, 2023	17,999,840				17,999,840